lightning/opening_wire.csv at e59cbb3e2c9ee7fa5fa3b8fb9fbd7d656bd728c3

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Rusty Russell 50f5eb34b4 openingd: take peer before we're opening, wait for explicit funding msg.

Prior to this, lightningd would hand uninteresting peers back to connectd,
which would then return it to lightningd if it sent a non-gossip msg,
or if lightningd asked it to release the peer.

Now connectd hands the peer to lightningd once we've done the init
handshake, which hands it off to openingd.

This is a deep structural change, so we do the minimum here and cleanup
in the following patches.

Lightningd:
1. Remove peer_nongossip handling from connect_control and peer_control.
2. Remove list of outstanding fundchannel command; it was only needed to
   find the race between us asking connectd to release the peer and it
   reconnecting.
3. We can no longer tell if the remote end has started trying to fund a
   channel (until it has succeeded): it's very transitory anyway so not
   worth fixing.
4. We now always have a struct peer, and allocate an uncommitted_channel
   for it, though it may never be used if neither end funds a channel.
5. We start funding on messages for openingd: we can get a funder_reply
   or a fundee, or an error in response to our request to fund a channel.
   so we handle all of them.
6. A new peer_start_openingd() is called after connectd hands us a peer.
7. json_fund_channel just looks through local peers; there are none
   hidden in connectd any more.
8. We sometimes start a new openingd just to send an error message.

Openingd:
1. We always have information we need to accept them funding a channel (in
   the init message).
2. We have to listen for three fds: peer, gossip and master, so we opencode
   the poll.
3. We have an explicit message to start trying to fund a channel.
4. We can be told to send a message in our init message.

Testing:
1. We don't handle some things gracefully yet, so two tests are disabled.
2. 'hand_back_peer .*: now local again' from connectd is no longer a message,
   openingd says 'Handed peer, entering loop' once its managing it.
3. peer['state'] used to be set to 'GOSSIPING' (otherwise this field doesn't
   exist; 'state' is now per-channel.  It doesn't exist at all now.
4. Some tests now need to turn on IO logging in openingd, not connectd.
5. There's a gap between connecting on one node and having connectd on
   the peer hand over the connection to openingd.  Our tests sometimes
   checked getpeers() on the peer, and didn't see anything, so line_graph
   needed updating.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

2018-08-09 19:44:27 +02:00

3.2 KiB

Raw Blame History

1	#include <common/cryptomsg.h>
2	#include <common/channel_config.h>
3	#include <common/derive_basepoints.h>
4	opening_init,6000
5	# Which network are we configured for (as index into the chainparams)?
6	opening_init,,network_index,u32
7	# Base configuration we'll offer (channel reserve will vary with amount)
8	opening_init,,our_config,struct channel_config
9	# Minimum/maximum configuration values we'll accept
10	opening_init,,max_to_self_delay,u32
11	opening_init,,min_effective_htlc_capacity_msat,u64
12	opening_init,,crypto_state,struct crypto_state
13	opening_init,,our_basepoints,struct basepoints
14	opening_init,,our_funding_pubkey,struct pubkey
15	# Constraints in case the other end tries to open a channel.
16	opening_init,,minimum_depth,u32
17	opening_init,,min_feerate,u32
18	opening_init,,max_feerate,u32
19	# Optional msg to send.
20	opening_init,,len,u16
21	opening_init,,msg,len*u8
22	#include <common/bip32.h>
23	#include <common/htlc_wire.h>
24	# Master->openingd: please fund a channel.
25	opening_funder,6001
26	opening_funder,,funding_satoshis,u64
27	opening_funder,,push_msat,u64
28	opening_funder,,feerate_per_kw,u32
29	opening_funder,,change_satoshis,u64
30	opening_funder,,change_keyindex,u32
31	opening_funder,,channel_flags,u8
32	#include <common/utxo.h>
33	opening_funder,,num_inputs,u16
34	opening_funder,,inputs,num_inputs*struct utxo
35	opening_funder,,bip32,struct ext_key
36	# Openingd->master: we've successfully offered channel.
37	# This gives their sig, means we can broadcast tx: we're done.
38	opening_funder_reply,6101
39	opening_funder_reply,,their_config,struct channel_config
40	opening_funder_reply,,first_commit,struct bitcoin_tx
41	opening_funder_reply,,first_commit_sig,secp256k1_ecdsa_signature
42	opening_funder_reply,,crypto_state,struct crypto_state
43	opening_funder_reply,,revocation_basepoint,struct pubkey
44	opening_funder_reply,,payment_basepoint,struct pubkey
45	opening_funder_reply,,htlc_basepoint,struct pubkey
46	opening_funder_reply,,delayed_payment_basepoint,struct pubkey
47	opening_funder_reply,,their_per_commit_point,struct pubkey
48	opening_funder_reply,,minimum_depth,u32
49	opening_funder_reply,,remote_fundingkey,struct pubkey
50	opening_funder_reply,,funding_txid,struct bitcoin_txid
51	opening_funder_reply,,feerate_per_kw,u32
52	opening_funder_reply,,our_channel_reserve_satoshis,u64
53	# Openingd->master: they offered channel.
54	# This gives their txid and info, means we can send funding_signed: we're done.
55	opening_fundee,6003
56	opening_fundee,,their_config,struct channel_config
57	opening_fundee,,first_commit,struct bitcoin_tx
58	opening_fundee,,first_commit_sig,secp256k1_ecdsa_signature
59	opening_fundee,,crypto_state,struct crypto_state
60	opening_fundee,,revocation_basepoint,struct pubkey
61	opening_fundee,,payment_basepoint,struct pubkey
62	opening_fundee,,htlc_basepoint,struct pubkey
63	opening_fundee,,delayed_payment_basepoint,struct pubkey
64	opening_fundee,,their_per_commit_point,struct pubkey
65	opening_fundee,,remote_fundingkey,struct pubkey
66	opening_fundee,,funding_txid,struct bitcoin_txid
67	opening_fundee,,funding_txout,u16
68	opening_fundee,,funding_satoshis,u64
69	opening_fundee,,push_msat,u64
70	opening_fundee,,channel_flags,u8
71	opening_fundee,,feerate_per_kw,u32
72	# The funding signed message: send this and we're committed.
73	opening_fundee,,msglen,u16
74	opening_fundee,,funding_signed_msg,msglen*u8
75	opening_fundee,,our_channel_reserve_satoshis,u64

3.2 KiB Raw Blame History

3.2 KiB

Raw Blame History